Radial cleavage - metazoa, Biology

Assignment Help:

Radial cleavage - Metazoa

Radial cleavage produces tiers or layers of cells one on top of another. Radial cleavage is also said to be indeterminate or regulative because each of the blastomeres of the early embryo, if separated from the other, can regulate its development and form a complete well proportioned embryo. This happens because the blastomeres are equipotent; their final fate is not yet determined and there is no definite relation between the position of early blastomeres and specific tissue it will form in the embryo (hence indeterminate). This type of cleavage is found in some cnidarianes, echinoderms and all chordates.

1560_Radial cleavage - Metazoa.png

Figure: Radial cleavage shown at 4, 8 and 16 cell stage


Related Discussions:- Radial cleavage - metazoa

Conjugation – protozoan, Conjugation – Protozoan Conjugation is charac...

Conjugation – Protozoan Conjugation is characteristic of ciliates. The details vary from species to species. The general features can be observed in Paramecium sps. which has

What are the hydrophobic molecules, Q. What are the hydrophobic molecules (...

Q. What are the hydrophobic molecules (or hydrophobic molecular regions)? What are the hydrophilic molecules? How can they be characterized in relation to their polarity? Hydro

Polyphyletic theory - metazoa, Polyphyletic Theory - Metazoa This theo...

Polyphyletic Theory - Metazoa This theory was suggested by Greenheig (1959) and some other workers. According to this theory, sponges, coelenterates, ctenophores and flatworms

Explain the importance of surgery, Explain the Importance of Surgery? W...

Explain the Importance of Surgery? Well, surgery is that branch of medical science which has for its object the cure of local injuries or diseases, as wounds or fractures, trau

Find aquaporin channels in the membranes, The secretary coil fills the lume...

The secretary coil fills the lumen with a NaCl solution that is isotonic with the blood plasma. As this solution moves upward through the reabsorptive duct, NaCl is reabsorbed into

Bacterial diseases-actinobacillosis, Actinobacillosis Synonym   : Woo...

Actinobacillosis Synonym   : Wooden Tongue Causative organism                  : Actinobacillus lignieresii Species affected                   : Ruminants, cattle and s

What is an immunotoxin, Immunotoxin is formed by conjugating or combining a...

Immunotoxin is formed by conjugating or combining an antibody with highly toxic agent.

What is aquatic biodiversity, Q. What is aquatic biodiversity? Biodiver...

Q. What is aquatic biodiversity? Biodiversity found on Earth today is the result of 3.5 billion years of evolution. Until the emergence of humans, the Earth supported more biod

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd